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Patent Process Lithium from Brine

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Patent Process Lithium from Brine ( patent-process-lithium-from-brine )

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US 2022/0290272A1 Sep.15,2022 3 lithiumions.Ifthebrineledtotheadsorptioncolumn21 containsonlyveryfewornoneofthesecontaminants,steps 5and7canbeomitted. [045] Thelithiumionsadsorbedbytheadsorptionagent 23arethendesorbed(steps9and1).Block9comprisesthe filingoftheadsorptioncolumn21withanacidicsolutionas perclaim1.Mostofthelithiumionsadsorbedbythe adsorptionagentarethusdesorbed.Acertainproportionof thelithiumionsremainintheadsorptionagent,however. [0046] Inafurtherstep1,theeluentenrichedwith lithiumionsisexpeled. [047] Dependingontheefectivenesofthedesorption proces,steps9and1canberepeatedonceormultiple times.Theadsorptioncolumn21isthusfiledwiththeacidic solutionfromthepreviousdesorptionstep,inwhichitwas enrichedwithlithiumions,whereuponitisexpeledagain. Theserepetitionscanbeperformeduntilanoptimalratio betwenthelosofadsorptionagentandmaximizationof thedesorptionofthelithiumions achieved.Itmustbe consideredthatonlyabout0.4% oftheadsorptionagentis lostduringeachdesorptionproceswiththeacidicsolution describedbythisinvention.Itisthusposibletoperform steps9and1twoorthretimes.Eventhen,thelosof adsorptionagentonlyamountstoabout0.8% or1.2%.This isonlyafractionofthelosresultingfromdesorptionwith anacidicsolutionbasedonmuriaticacid.Inthelatercase, eachdesorptionstepresultsinlosofabout5%ofthe adsorptionagent. [0048]Folowingdesorption(steps9and1),theacidic solutionenrichedwithlithiumionsmaybefurtherconcen trated.Forexample,thismaybethecasewithmulti-step electrolysis,asdescribedinU.S.Pat.No.6,764,584B2.The resulting,relativelyhighlyconcentratedacidicsolutioncan takesplaceatalowertemperaturethanthefirsttimethe thenbefurtherprocesedintoaprecursorfortheproduction processtep“b)”isperformed. oflithiumionbateries. [049]Ithasbendiscoveredthatthedesorptionproces theprocessteps“a)introductionofthebrine”and“b) adsorptioncolumn21asecondtimeatlowtemperatures, K,CaandMgionsadsorbedbytheadsorptionagentare issuficientlyefectiveevenatdecreasingtemperatures.Itis introductionoftheeluent”,thereisaninterimstep,namely thusbeneficialiftheacidicsolutionisconveyedintothe “introductionofwaterintotheadsorptionagent”,sothatNa, suchas40°C.or30°C.,orevenlower. [050]FIG.2showsthedesignofanadsorptioncolumn 21suitableforconductingtheproces. [051]Theinterioroftheadsorptioncolumn21contains theadsorptionagent.Itdoesnottakeuptheentireinterior oftheadsorptioncolumn21. [052] Theadsorptioncolumn21comprisesaninlet25 andanoutlet27.Thebrineissupliedviatheinlet25and expeledviatheoutlet27. [053] Theacidicsolutioncanbesupliedandexpeled viatheinlet25ortheoutlet27.However,itisalsoposible foranaditionalconection29tobeusedforthesuplyand expulsionoftheacidicsolution.Thisconection29can,as showninFIG.2,belocatedatthebottomoftheadsorption column21.Butitcanalsobelocatedatthetopofthe adsorptioncolumn21(notpictured.) [0054] Inshort:Theprocesdescribedbytheinvention canbeconductedifthedesorptionagentissupliedtothe adsorptioncolumn21fromthetoporthebotom. [0055] Therequiredpumpsandvalvesarenotpicturedin FIG.2. desorbedandtransportedfromtheadsorptioncolumnwith thedrainageofthewater. 9.Procesasperclaim1,characterizedinthatthe adsorptionagentcomprisesmanganeseoxidecontaining lithium,aswelasapolymerasabondingagent. 10.Procesasperclaim1,characterizedinthatthe adsorptionagentcompriseslithiumtitaniumoxide(LiTiO), and/orlithium-aluminumlayereddoublehydroxidechloride (LiAn.2xAl(OH)3.mH20,with“An”=chlorine(CI),bro mine(Br),oriodine(I),“m”isanumerator)andapolymer asabondingagent. 1.Procesasperclaim9,characterizedinthatthe bondingagentispolyvinylchloride. 12.Procesasperclaim1,characterizedinthatthebrine stemsfromapyrometalurgicrecyclingprocesoflithium ionaccumulators. 13.Procesasperclaim1,characterizedinthatthebrine stemsfromahydrometalurgicrecyclingprocesoflithium ionaccumulators. ** What is claimed is: 1.Procesforproducingalithiumconcentratefrombrine, containinglithiumions,comprisingthefolowingsteps: a)introductionofbrineintoanadsorptioncolumnatleast partialyfiledwithanadsorptionagentsothatlithium ionsareadsorbedbytheadsorptionagent; b)introductionofaneluentintotheadsorptionagentso thatthelithiumionsadsorbedbytheadsorptionagent aredesorbed, characterizedinthat,beforeintroductionintotheadsorp tionagent,theeluentisamixtureofwaterandacetic acidand/orwaterandsodiumperoxydisulfateand/or waterandammoniumperoxydisulfate. 2.Procesasperclaim1,characterizedinthatthe proportionofaceticacidintheeluentisbetween0.1%and 100% . 3.Procesasperclaim1,characterizedinthatthe proportionofammoniumperoxydisulfateintheeluentis between0.05% and65%. 4.Procesasperclaim1,characterizedinthatthe proportionofsodiumperoxydisulfateintheeluentis between0.05% and60%. 5.Procesasperclaim1,characterizedinthatitalsotakes placeatatemperaturebelow70°C. 6.Procesasperclaim1,characterizedinthattheproces step“b)introductionoftheeluent”isrepeatedoneormore times,andthatduringtherepetition(s)theacidicsolution containinglithiumionsfromthepreviousdesorptionstepis used. 7.Procesasperclaim6,characterizedinthatthe repetitionoftheprocesstep“b)introductionoftheeluent” 8.Procesasperclaim1,characterizedinthat,betwen

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One project is converting salt (brine) based water conditioners to simultaneously produce power.

In addition, there are many opportunities to extract Lithium from brine (salt lakes, groundwater, and producer water).

Salt water or brine are huge sources for lithium. Most of the worlds lithium is acquired from a brine source. It's even in seawater in a low concentration. Brine is also a byproduct of huge powerplants, which can now use that as an electrolyte and a huge flow battery (which allows storage at the source).

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